Fish are losing their survival instinct -- even becoming attracted to the smell of their predators -- as the world's oceans become more acidic because of climate change, a new research report said on Monday.
Reef fish are seen swimming in Milne Bay, in eastern Papua New Guinea, on April 14, 2014
The study of fish in coral reefs off the coast of Papua New Guinea -- where the waters are naturally acidic -- showed the animals' behaviour became riskier.
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